19600000961 has 4 divisors (see below), whose sum is σ = 20752942212. Its totient is φ = 18447059712.

The previous prime is 19600000957. The next prime is 19600000991. The reversal of 19600000961 is 16900000691.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16900000691 = 7 ⋅2414285813.

It can be written as a sum of positive squares in 2 ways, for example, as 15263119936 + 4336881025 = 123544^2 + 65855^2 .

It is a cyclic number.

It is not a de Polignac number, because 19600000961 - 2² = 19600000957 is a prime.

19600000961 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19600000991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576470600 + ... + 576470633.

It is an arithmetic number, because the mean of its divisors is an integer number (5188235553).

Almost surely, 2^19600000961 is an apocalyptic number.

It is an amenable number.

19600000961 is a deficient number, since it is larger than the sum of its proper divisors (1152941251).

19600000961 is a wasteful number, since it uses less digits than its factorization.

19600000961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152941250.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 19600000961 in words is "nineteen billion, six hundred million, nine hundred sixty-one", and thus it is an aban number.